Starting and stopping mechanism.



A. A. BALL, JR. STARTING AND STOPPING MECHANISM.

APPLICATION FILED NOV. 14 1908. I

Patented Jan 13, 1914.

A. BALL; JR. STARTING AND STOPPING MECHANISM. .ZAAPPLIO'ATAIIOLN FILED NOV. 14, 1908.

' PatentedJau 13, 1914.

A. A. B-A'LL, h. r sun'rme Ann s'rorrme mammal rims-1o! nun nor-14, 190a.

Patented Jan. 13, 1914.

4 inns-sum a.

:A. A; BALL, JR. STARTING AND STOPPING MECHANISM.

APPLICATION 11.21) 1m. 14, 190B.

4 SHEETS-SHEET 4.

Patented Jan. 13, 191i v WWW at Lynn, in the county of Essex and State UNITED srarns PATENT orrron.

nu'eosrns aa BALL, JR., of LYNN, MAssAeHUsnrrs, .A ssmamm "UNITED sfion MACHINERY comranrgor rarnnson, NEW JERSEY, A coaronarron or NEW JERSEY.

rea ses.

To all ealmm it may concern Be it known that I, AUGUSTUS A. BALL, Jr., a cltizen of the United States, residing of Massachusetts, have invented certain new and usefullmp'rovements in Starting and Stopping Mechanismyand I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to mechanism for controlling the starting and stopping of the driving shaft or 'other rotary element through which the operating parts of the machine are driven and more especially to Inech anism'which is adapted for use in controlling the operation of machines, such for instance, as sole molding, direct pressure sole leveling, or sole laying machines, in which the driving mechanism is manually throwninto operation through a treadle or similar device. a

The object of the invention is to provide a controlling mechanism having l' S parts constructed and arranged in an improved and simplified manner, and having an improved mode of operation whereby the driving mechanism may be thrown into oper} atlon with comparatively little exertion on the part of the operator, and whereby the stopping may be selectively controlled either automatically or by the operator.

To theseends the various features of the.

invention contemplate the provision of improved devices for connecting. a starting treadle and driving clutch, of improved mechanism for applying a brake in disengaging the .clutch and for releasing the brake in engaging the clutch, of improved devices for automatically disengaging the clutch,and of improved devices for enabling the operator to render the automatic stopping devices inactive,- and to manually control the operation of the driving mechanism or of the driving mechanism and brake. V

The various features of the invention will be readily understood from an inspection oft-he accompanying drawings, in which Figure-l is a side elevation of a machine embodying the various features of the in vention in their preferred form; Fig. 9 is a sectional plan view oi: the mechanism Specification of Iietters Patent.

ramme AND s'ro'rrme MEcHhiNisriI Patented Jan. 13, 1 914.

Application file d November 14, E08. Serial No. 462365.

F g. 313 a la w of the a y d sengaging the clutch and applying the brake; Figs is a side elevation of the devices shown in Fig. 3; Fig. 5 is a detail view showing the latching device which retains the automatic stopping devices either in or out of working relation; Fig. 6 is a side elevation of the brake; Fig. 7 is a sectional'elevation looking from right to left in Fig 6; and Fig. 8 is a sectional detail on line 8-8, Fig. 6.

In the drawings the various features of the inventionare shown embodied in a well known type of machine for ope-rating upon shoe soles, in which two sets of devices for subjecting the soles to.pressur'e are alternately actuated through two cranks and connected toggles. It will be understood, however, that the invention is not limited its application to such machines, but may be used invarious other types ofmachines.

In the machine shown inthe drawings the crank shaft is indicated at 1, and'is provided with two cranks 2 and 3 arranged at an angle of 1 S0 to each other, as is usual in this type of machines. The toggles and links connecting the toggles with the cranks" have been omitted for the sake ofclearness.

The crank shaft is driven from a driving shaft 5 through the usual gearing (not shown).

on the shaft, and to move longitudinally thereon. The pulley is provided with a friction surface forming one member of a clutch, the other member 7 of which'is coil inected to rotate with the shaft 5. The pulilev6 is'shifted toen'gage and disengage the The shaft 5 is driven through a pulley 6 which isn'iounted to revolvefreely rod 12 passes through an opening formed in a boss 14 on the upper end of a treadle lever 15. The treadle lever ispivoted at 16 to the frame cif the machine, and is provided at its front/end with a boss'l'? in which a treadle 18 is adjustably secured by means of a set screw 19. By'means of the adjustable con nection between the treadle and the treadle lever,j the vertical position of the treadle may fiecadjusted to vary the distance between the treadleand the floor to suit the convenience of the operator.

When the treadle is depressed the clutch is engaged to start the machine. The disr en agement of the clutch may be controlled .but the attention of the operator.

through the treadle, so that the operator may stop the machine at will by releasing the treadle, or may be controlled automatically so thatthemachine willbe stopped at apredeter ed point in its operation withthe' normal operation ofmachines ofthe type illustrated, the machineshould be I stopped after the crank shaft has made a half revolution and when the cranks are in the relative positions shown in Fig. 1. The automatic stopping devices illustrated are .accordingly constructed and timed to disengage the clutch and stop the machine at each half revolution of the crank shaft. The automatic control of the-driving mechanism is secured by locking devices which look the clutch in .engagement after it has been engaged by the depression of the treadle, and

which are automatically operated after the crank shaft has made a half revolution to release the clutch so that it is disengaged.

In the construction shown, the devices for locking the clutch. in engagement comprise a locking lever arranged to engage a shoulder on the starting mechanism and hold the clutch in engagement, and means for automaticallyjdisengaging the lever from the shoulder; In order that the locking devices may be -rendered active or inactive at the will (ifihe operator, provision is made forval ying'tlfe relative movement between the locking lever and the shoulder produced by the depression of the treadle, the parts being so set by the operator that the relative movement between the shoulder and lever is such that the lever does not engage the should'er' in case the automatic stop devices are not to be used, and being so set that the relative motion is such that the lever engages the shoulder when the treadle is depressed in case the automatic stopdevices are to be.

. The shoulder 22- which cooperates with the forward end of the locking lever is formed by the rear end of a sleeve 26 which. is

mounted upon the clutch actuating'rod 12.

The rearward movement of the sleeve with During relation to the rod determined by a stop pin 27 projecting from the rod, and ar-' ranged to engage the end of a slot 28 formed in the'sleeve. .The sleeve and locking lever are connected by a spring 29 which acts to retain the vertical arm of the lever in position to .be engaged by the cranks, and also forces the. sleeve 26 and the rod 12 in a direction to hold the clutch out of engagement. The sleeve 26 1s connected by means of a link 30 with the upper end of the treadle lever 15, and a' latch lever 31 is mounted on theiforward end of the rod 12, so that it maybe set in position to engage the front end of the link 30, or in'position where it will not interfere with the forward movement 'of the .link 30. The forward end of the" link 30 projects somewhat beyond the bOSSgdA: on the treadle lever, and forms a stop for preventing lost motion between the treadleglever and the rodl2 when the latch lever;3'1 is'in position to be engaged by the end of the link. g

- When the automatic stopping devices are to be rendered inactive,"the latch lever 31 is set in the position indicated in the drawin s. 7

When in this position, it acts to retain t e sleeve 26 in itsrearward position on the rod 12 when the treadle is depressed, and.

the sleeve and rod move forward in unison when the treadle is de ressed to start the machine, or is release clutch and stop the machine. In this case to ,disengage the the forward movement im arted to the sleeve 26 by the depression 0 the treadle is not suflicient to bring theshoulder 22 in front of the roll 21, and the locking devices are therefore maintained out of working relation so long as the latch lever 31remains in the eposition indicated in the drawings, and the starting and stopping of the machine is'controlled'by the operator through the treadle. When the automaticv stopping devices are to be thrown into action, the op'- Y orator sets the latching lever 31 in the position indicated in dotted lines in Fig. 5, so that it is not infront of the link 30. Now when the treadle is depressed in starting the machine, the sleeve 26 is moved forward on the actuating rod 12 until the boss Mengages the lever 31, and then during the continued-movement of the treadle in engaging the clutch the sleeve is'moved with the rod. This increased forward movement of the sleeve 26 brings the shoulder 22 in front of the forward end of the locking lever, so that the rod 12 is held in position to hold'the clutch in engagement until the locking lever is actuated by one of the cranks when the rod is released and the clutch is. disengaged by the action of the spring 29.

In order that the rotation of the driving shaft 5 may be uniformly arrested when the driving clutch is disengaged, a friction brake is provided, and this brake is connected so I that iti's actuated through the, movements of the, actuating rod '12.

Any suitable form of friction brake may be employed, but it is'preferred to employ the form of brake shown in the drawings. As shown, the brake consists-of a pulley 32 secured to the shaft '5, and provided with two opposed friction surfaces 33 and 34.'

1 Between these surfaces of the pulley, two

and 36 are actuated to apply or relieve the. :brake by, means of an actuating disk 39 mounted between the-stationary disks, and

carrying a series of balls 40. ,The disk is provided with recesses 41 having wedge shaped surfaces 42 against which the balls act to force the braking disks apart, when the actuating disk 39 is given a slight movement in the direction of the arrow, Fig. 8. '-When' the actuating disk is moved in the from.

opposite direction, the balls are moved into the deeper parts of the recesses 41, thus relieving the pressure between v the brake .disks and the friction surfaces on the pulley. The actuating disk is operated to apply and relieve the brake through a lever .43 pivotally mounted on the rod 318, and provided with a pin 44, the head of which engages a 'slot :15 in the disk 89. The upper end of the lever 43 projects through an opening in a collar 46 adjustably secured upon the actuating rod 12 by means of nuts-47. By

means of these connections the brake is applied upon the disengagement of the clutch, and the brake is relieved upon the engagement of the clutch. By means of the adjust-able connections between the actuating rod and the clutch and brake operating levers, the relation between the I clutch and brake'may be accurately regulated to secure the proper action of both the brake and clutch, when the actuating mechanism is opcrated in starting or stopping the machine.

While it is preferred to employ the specific construction and arrangementof parts shown and described, this construction and arrangement is not essential to the broader features of the invention, and may be'varied and modified without departing there- Having set forth-the nature and object of the invention, and specifically described a machine in which it may be embodied, What I claim is '-1. A starting and stopping mechanism,

having, in combination, a clutch, mechanism for manually controlling the engagement.

and disengagement of the clutch, devices for 'locking the clutchin engagement, mechanism for automatically opera-ting the locking devices to release the clutch, and means 5 acting when set by the operator to retain the locking devices either in or out of working relation whereby the disengagement of I theclutchmay be either automatically or when set by the operator to retain the locking devices either in or out of working relation whereby the disengagement of the clutch may be either automatically con-- trolled or controlled through the treadleat the will of the operator, substantially as de scribed.

3. A starting and stopping mechanism, having, in combination, adriving H18Cl13' nism, a starting lever, a crank shaft driven from the driving mechanism, a locking le ver operated by a crank on the crank shaft, and a cooperating shoulder connected to move with the starting lever, substantially as described.

4. A. starting and stopping mechanism, having, in combination, a starting mechanism, a locking lever, a co'o'perating shoulder on the starting mechanism, means for varying the relative movement of the lever and shoulder caused in operating the starting mechanism to render the locking devices active or inactive at will, and mechanism for automatically operating the locking lever, substantially as described. A p

5. A starting and stopping mechanism, having, in combination, a starting treadle, a locking lever a cooperating shouldered part connected to move with the start ing treadle, and means for varying the movement imparted to the shouldered part by the treadle to render the locking lever active or 'inactive, substantially as described. I

6. A starting and stopping mechanism, having, in combination, a starting mechanism including an actuating rod, a locking lever, means forautomatically operating the locking lever, a sleeve mounted on the ifod and provided with a shoulder for cooperab' ing with the locking lever, a treadle lever connected with the sleeve, and a; latching device mounted' upon the rod for movement into position to prevent movement of the sleeve with relation to the rod or into' position to allow said movement, substantially as described.

7. A starting and stopping mechanism, having, in combination, a starting mecha, nism including an actuating rod, a sleeve 26 mounted on the rod, a treadle lever 15,-a link 30 connecting the sleeve and lever, and a latching lever 31 mounted on the rod in having, in combination, a clutch mechanism for manually engaging the clutch and disengaging it at any point in its operation,

mechanism for automatically disengaging the clutch, means acting when set by the operator to render the automatic mechanism either active or inactive whereby the disengagement of the clutch may be either automatically or manually controlled at the will of the operator, substantially as described.

9. A starting and stopping mechanism, having, in combination, a driving mechanism, mechanism for manually throwing the driving mechanism into and out of operation at any point in its operation, mechanism for automatically throwing the driving mechanism out of operation, and means acting when set by the operator to render the automatic mechanism either active or inactive whereby the disengagement of the clutch may be either automatically or manually controlled at the will of the operator, substantially as described.

10. A star-tin and stopping mechanism, having, in com ination, a driving mechanism, mechanism for manually throwing the driving mechanism into operation and'out of operation'at an point in its operation, a trip for controlling the throwing out of the driving mechanism, mechanism or auto matically operating the trip, and means for rendering the trip active or inactive at the will of the operator, substantially as described.

11. A starting and stopping mechanism, having, in combination, a starting mechanism, -'a locking device, a cooperating shoulder on the starting mechanism, and means for adjusting the relation of the shoulder and locking device to render the locking device active or inactive, substantially as described.

In testimony whereof I afiix my signature, in presence of two witnesses.

AUGUSTUS A. BALL, JR.

Witnesses:

FRED O. FISH, M. L. GILMAN. 

